It is not hard to understand why soldiers contracted malarial fever in a country like Cuba, when they were imperfectly sheltered, inadequately equipped, insufficiently fed and clothed, forced to sleep on the ground, and compelled to drink unboiled water from contaminated brooks. But there was another reason for the epidemic character and wide prevalence of the calenture from which the army suffered, and that was exposure to exhalations from the malarious, freshly turned earth of the rifle-pits and trenches. All pioneers who have broken virgin soil with a plow in a warm, damp, wooded country will remember that for a considerable time thereafter they suffered from various forms of remittent and intermittent fever. Our soldiers around Santiago had a similar experience. The unexpected strength and fighting capacity shown by the Spaniards in the first day's battle, and their counter-attack upon our lines on the night of the following day, led our troops to intrench themselves by digging rifle-pits and constructing rude bomb-proofs as places of refuge from shrapnel. During the armistice these intrenchments were greatly extended and strengthened, and before Santiago surrendered they stretched along our whole front for a distance of several miles. In or near these rifle-pits and trenches our men worked, stood guard, or slept, for a period of more than two weeks, and the exhalations from the freshly turned earth, acting upon organisms already weakened by hardships and privations, brought about an epidemic of calenture upon the most extensive scale. By August 3 the condition of the army had become so alarming that its general officers drew up and sent to General Shafter the following letter: We, the undersigned officers, commanding the various brigades, divisions, etc., of the army of occupation in Cuba, are of the unanimous opinion that this army should be at once taken out of the island of Cuba and sent to some point on the northern sea-coast of the United States; that it can be done without danger to the people of the United States; that yellow fever in the army at present is not epidemic; that there are only a few sporadic cases, but that the army, is disabled by malarial fever, to the extent that its efficiency is destroyed, and that it is in a condition to be practically entirely destroyed by an epidemic of yellow fever, which is sure to come in the near future. We know from the reports of competent officers and from personal observation that the army is unable to move into the interior, and that there are no facilities for such a move if attempted, and that it could not be attempted until too late. Moreover, the best medical authorities of the island say that with our present equipment we could not live in the interior during the rainy season without losses from malarial fever, which is almost as deadly as yellow fever.